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Samambaias e licófitas do Parque Ecológico do Gunma, município de Santa Bárbara do Pará, estado do Pará, Brasil / Ferns and lycophytes from Gunma Ecological Park, Santa Bárbara do Pará municipality, Pará state, Brazil

Jeferson Miranda Costa and Marcio Roberto Pietrobom
Rodriguésia
Vol. 61, No. 2 (2010), pp. 223-232
Stable URL: http://www.jstor.org/stable/23500165
Page Count: 10
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Abstract

O Parque Ecológico do Gunma — PEG (Santa Bárbara do Pará, estado do Pará, Brasil) representa um dos poucos remanescentes florestais da região metropolitana de Belém. O PEG mantém uma rica flora fanerogâmica composta por espécies consideradas raras, mas nada se conhece a respeito de sua flora de plantas vasculares sem sementes. Assim, este trabalho teve como objetivo inventariar as espécies de samambaias e licófitas do Parque Ecológico do Gunma. No PEG foram registradas 56 espécies, distribuidas em 28 gêneros e 15 familias. Das espécies registradas, Lellingeria suspensa (L.) A.R. Sm. & R.C. Moran foi citada pela primeira vez para o estado do Pará, e Polyphlebium diaphanum (Kunth) Ebihara & Dubuisson constituiu um novo registro para a Região Norte (Amazônia brasileira). As familias mais representativas foram Hymenophyllaceae (15 spp.), Dryopteridaceae (8 spp.), Polypodiaceae (7 spp.) e Pteridaceae (6 spp.), e os gêneros foram Trichomanes (7 spp.) e Elaphoglossum (6 spp.). A maioria das espécies apresentou hábito herbáceo (52 spp.), habitat epifitico (30 spp.) e terrestre (23 spp.), ocorreu exclusivamente nos sub-bosques (35 spp.) e apresentou distribuição americana (34 spp.). Estes resultados demonstraram a importância do Parque Ecológico do Gunma para a preservação da flora local e regional de plantas vasculares sem sementes. The Gunma Ecological Park — PEG (Santa Bárbara do Pará, Pará state, Brazil) is one of the few preserved forest remnants in the metropolitan region of Belém. The PEG has a rich phanerogamic flora with rare species, but nothing is known about its seedless vascular-plant flora. Our aim is to present a floristic survey of ferns and lycophytes from Gunma Ecological Park. The 56 recorded species belong to 28 genera and 15 families. This is the first record for Lellingeria suspensa (L.) A.R. Sm. & R.C. Moran in Pará state and also for Polyphlebium diaphanum (Kunth) Ebihara & Dubuisson in the Brazilian Amazon. The richest families were Hymenophyllaceae (15 spp.), Dryopteridaceae (8 spp.), Polypodiaceae (7 spp.) and Pteridaceae (6 spp.). The genera with highest number of species were Trichomanes (7 spp.) and Elaphoglossum (6 spp.). The majority of the species were herbaceous (52 spp.), with epiphytic (30 spp.) and terrestrial (23 spp.) habitat, occurred exclusively in the understory (35 spp.) and presented American distribution (34 spp.). This result demonstrates the importance of Gunma Ecological Park for local/regional seedless vascular-plant flora preservation.

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